Time-frequency analysis of backscattered data from a coated strip with a gap

Author

Ling, H. ; Moore, J. ; Bouche, D. ; Saavedra, V.

Author_Institution

Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA

Volume

41

Issue

8

fYear

1993

fDate

8/1/1993 12:00:00 AM

Firstpage

1147

Lastpage

1150

Abstract

The short-time Fourier transform is applied to analyze the backscattered signal from a coated strip with a gap in the coating. The resulting time-frequency display shows good localization of the different scattering mechanisms. In particular, the time-frequency representation is well suited for identifying the dispersive surface wave contributions. The different scattering mechanisms are further extracted by applying two-dimensional gates in the time-frequency plane. This is a natural extension of the usual time-gating concept and allows the original data to be decomposed into a set of fundamental scattering mechanisms in either the time or the frequency domain

Keywords

backscatter; electromagnetic wave scattering; radar cross-sections; time-frequency analysis; backscattered signal; coated strip; dispersive surface wave contributions; electromagnetic scattering; scattering mechanisms; short-time Fourier transform; time-frequency representation; time-gating concept; two-dimensional gates; Coatings; Data mining; Dispersion; Displays; Fourier transforms; Scattering; Signal analysis; Strips; Surface waves; Time frequency analysis;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.244659

Filename

244659